#ifndef _IIC_H__
#define _IIC_H__

//unsigned char ucpcf_U;用来接收模拟信号的值
void IIC_Start(void); 
void IIC_Stop(void);  
bit IIC_WaitAck(void);  
void IIC_SendAck(bit ackbit); 
void IIC_SendByte(unsigned char byt); 
unsigned char IIC_RecByte(void); 
unsigned char PCF8591_Adc(void); 
void PCF8591_Dac(unsigned char dat); 

#endif